[11.x] Configuration to disable events on Cache Repository (#51032)

* Configuration option to disable events on cache

Allow caches to be defined without auto-registering events dispatcher.

On in-memory caches like array or apc, the overhead of triggering events results in 80%+ overhead in basic cache operations.  This change allows adding a config value to disable events for that particular Cache Repository.

* Update CacheManager.php

* Update CacheManagerTest.php

---------

Co-authored-by: Taylor Otwell <[email protected]>

Author: serpentblade

src/Illuminate/Cache/CacheManager.php

@@ -288,8 +288,10 @@ protected function newDynamodbClient(array $config)
      */
     public function repository(Store $store, array $config = [])
     {
-        return tap(new Repository($store, Arr::only($config, ['store'])), function ($repository) {
-            $this->setEventDispatcher($repository);
+        return tap(new Repository($store, Arr::only($config, ['store'])), function ($repository) use ($config) {
+            if ($config['events'] ?? true) {
+                $this->setEventDispatcher($repository);
+            }
         });
     }
 

tests/Cache/CacheManagerTest.php

@@ -277,6 +277,36 @@ public function testThrowExceptionWhenUnknownStoreIsUsed()
         $cacheManager->store('alien_store');
     }
 
+    public function testMakesRepositoryWithoutDispatcherWhenEventsDisabled()
+    {
+        $userConfig = [
+            'cache' => [
+                'stores' => [
+                    'my_store' => [
+                        'driver' => 'array',
+                    ],
+                    'my_store_without_events' => [
+                        'driver' => 'array',
+                        'events' => false,
+                    ],
+                ],
+            ],
+        ];
+
+        $app = $this->getApp($userConfig);
+        $app->bind(Dispatcher::class, fn () => new Event);
+
+        $cacheManager = new CacheManager($app);
+
+        // The repository will have an event dispatcher
+        $repo = $cacheManager->store('my_store');
+        $this->assertNotNull($repo->getEventDispatcher());
+
+        // This repository will not have an event dispatcher as 'with_events' is false
+        $repoWithoutEvents = $cacheManager->store('my_store_without_events');
+        $this->assertNull($repoWithoutEvents->getEventDispatcher());
+    }
+
     protected function getApp(array $userConfig)
     {
         $app = new Container;